Giải thích các bước giải:
$\dfrac{x:9}{x:8}=\dfrac{5}{9}$ $(x\neq0)$
$⇒9x:9=5x:8$
$⇒x=\dfrac{5}{8}x$
$⇒\dfrac{3}{8}x=0$
$⇒x=0_{(ktm)}$
Vậy phương trình vô nghiệm
Nếu:
$x:9=5$
$⇒x=5×9$
$⇒x=45$
Vậy $x=45$
$x:8=9$
$⇒x=9×8$
$⇒x=72$
Vậy $x=72$
\begin{array}{l} x:9=5\\x\,\,\,\,\,\,\,\,=5\times9\\x\,\,\,\,\,\,\,\,=45\\.............\\x:8=9\\x\,\,\,\,\,\,\,\,=9\times8\\x\,\,\,\,\,\,\,\,=72 \end{array}
Cho `x,y>0` tm `\sqrt{x}+\sqrt{y} ≥1` Tìm min `P=(2x+8\sqrt{x}+17)/(\sqrt{x}+2)+(3y+6\sqrt{y}+5)/(\sqrt{y}+1`
giúp mình bài 4 nha thank kiu so much
Mọi người check hộ em với ạ, em cảm ơn!!! I and my friends often take part in childrens program. This is a program which help orphans, street children, and mentally/physically disabled children in our town to have better life. We often visit them on sunday at house of gratitude. We give them presents such as fruit, candy, cakes, old clothes and so on. We teach them to learn about many things in life, tell them funny and meaningful stories,..etc ..so that they can fall in line with society without any complex. They're very happy and like us. I thinhk it's really a useful activity. I as well as my friends contribute to making the world better.
Mn giải giúp mk vs ạ! Cảm ơn nhìu !
win 7 có Bluetooth ko cách mở nó
tim x nguyen de x^3 - 2x^2 + 5x - 5 chia hết cho x^2 +1
Giúp mình 2 bài này với ạ mình cảm ơn !
Nhanh nha Vote + 5 sao + cảm ơnnnnnnnnnnnnnnn
Chõ,y là hai số nguyên cùng dấu. Tính x+y biết |x+y|=|x|+|y|
a,-3/5.14/7+3/5.-8/7+9/5 b, 0,01.√144-√4/25 c, (1 1/2-0,5):(-3) mũ 2 + 1/3-1/6 d, 5√16-4√19+√25-0,3.√400 e, (-3/2) mũ 2 + |-5/6| - 1 1/2 : 6 (Giúp em với ạ)
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